If you mean in RuneScape, both members and non-members can randomly get diamonds while mining. Also, both members and non-members can buy and sell diamonds on the Grand Exchange.
By the way, you can now buy a membership with in-game wealth. A bond, that can be traded for 14 days membership, costs about 7 million coins at the moment of this writing - but the price may change over time.
You have to level up. That's the only way non-members can receive diamonds without payment.
If you have diamonds, you can purchase at all the shops, without membership. However, there are no shops for non-members anymore.
Diamonds are non-renewable.
Yes, diamonds are non-renewable.
Yes, diamonds are non-renewable.
well that way you are the king of roblox
there is no way to get non members members stuff. and even if they where able to give them stuff they wouldn't be able to use it. it would just turn gray.
armoured zombies for members, spider in stronghold of security non members
No. A pure diamond is carbon, and it is an allotrope of this element in the same way that graphite (pencil lead) is an allotrope of carbon. Thus, diamond is not a metal because carbon is not a metal.
no!
As of now there is no way to do what was asked.
No, only members can have pets.